linux-kernel - Re: [PATCH v4 2/6] media: platform: qcom/iris: add power_off_controller to vpu

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Message-ID: <847cdac2-e048-ea76-3e59-6121b6c5dc5e@quicinc.com>
Date: Wed, 9 Apr 2025 21:40:23 +0530
From: Vikash Garodia <quic_vgarodia@...cinc.com>
To: Neil Armstrong <neil.armstrong@...aro.org>,
        Dikshita Agarwal
	<quic_dikshita@...cinc.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        "Mauro Carvalho Chehab" <mchehab@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
CC: <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Bryan
 O'Donoghue" <bryan.odonoghue@...aro.org>
Subject: Re: [PATCH v4 2/6] media: platform: qcom/iris: add
 power_off_controller to vpu_ops


On 4/9/2025 8:08 PM, Neil Armstrong wrote:
> In order to support the SM8650 iris33 hardware, we need to provide a
> specific constoller power off sequences via the vpu_ops callbacks.
> 
> Add the callback, and use the current helper for currently supported
> platforms.
> 
> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> Reviewed-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> Tested-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org> # x1e Dell
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
>  drivers/media/platform/qcom/iris/iris_vpu2.c       | 1 +
>  drivers/media/platform/qcom/iris/iris_vpu3.c       | 1 +
>  drivers/media/platform/qcom/iris/iris_vpu_common.c | 4 ++--
>  drivers/media/platform/qcom/iris/iris_vpu_common.h | 2 ++
>  4 files changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/iris/iris_vpu2.c b/drivers/media/platform/qcom/iris/iris_vpu2.c
> index 8f502aed43ce2fa6a272a2ce14ff1ca54d3e63a2..7cf1bfc352d34b897451061b5c14fbe90276433d 100644
> --- a/drivers/media/platform/qcom/iris/iris_vpu2.c
> +++ b/drivers/media/platform/qcom/iris/iris_vpu2.c
> @@ -34,5 +34,6 @@ static u64 iris_vpu2_calc_freq(struct iris_inst *inst, size_t data_size)
>  
>  const struct vpu_ops iris_vpu2_ops = {
>  	.power_off_hw = iris_vpu_power_off_hw,
> +	.power_off_controller = iris_vpu_power_off_controller,
>  	.calc_freq = iris_vpu2_calc_freq,
>  };
> diff --git a/drivers/media/platform/qcom/iris/iris_vpu3.c b/drivers/media/platform/qcom/iris/iris_vpu3.c
> index b484638e6105a69319232f667ee7ae95e3853698..13dab61427b8bd0491b69a9bc5f5144d27d17362 100644
> --- a/drivers/media/platform/qcom/iris/iris_vpu3.c
> +++ b/drivers/media/platform/qcom/iris/iris_vpu3.c
> @@ -118,5 +118,6 @@ static u64 iris_vpu3_calculate_frequency(struct iris_inst *inst, size_t data_siz
>  
>  const struct vpu_ops iris_vpu3_ops = {
>  	.power_off_hw = iris_vpu3_power_off_hardware,
> +	.power_off_controller = iris_vpu_power_off_controller,
>  	.calc_freq = iris_vpu3_calculate_frequency,
>  };
> diff --git a/drivers/media/platform/qcom/iris/iris_vpu_common.c b/drivers/media/platform/qcom/iris/iris_vpu_common.c
> index fe9896d66848cdcd8c67bd45bbf3b6ce4a01ab10..268e45acaa7c0e3fe237123c62f0133d9dface14 100644
> --- a/drivers/media/platform/qcom/iris/iris_vpu_common.c
> +++ b/drivers/media/platform/qcom/iris/iris_vpu_common.c
> @@ -211,7 +211,7 @@ int iris_vpu_prepare_pc(struct iris_core *core)
>  	return -EAGAIN;
>  }
>  
> -static int iris_vpu_power_off_controller(struct iris_core *core)
> +int iris_vpu_power_off_controller(struct iris_core *core)
>  {
>  	u32 val = 0;
>  	int ret;
> @@ -264,7 +264,7 @@ void iris_vpu_power_off(struct iris_core *core)
>  {
>  	dev_pm_opp_set_rate(core->dev, 0);
>  	core->iris_platform_data->vpu_ops->power_off_hw(core);
> -	iris_vpu_power_off_controller(core);
> +	core->iris_platform_data->vpu_ops->power_off_controller(core);
>  	iris_unset_icc_bw(core);
>  
>  	if (!iris_vpu_watchdog(core, core->intr_status))
> diff --git a/drivers/media/platform/qcom/iris/iris_vpu_common.h b/drivers/media/platform/qcom/iris/iris_vpu_common.h
> index 63fa1fa5a4989e48aebdb6c7619c140000c0b44c..f8965661c602f990d5a7057565f79df4112d097e 100644
> --- a/drivers/media/platform/qcom/iris/iris_vpu_common.h
> +++ b/drivers/media/platform/qcom/iris/iris_vpu_common.h
> @@ -13,6 +13,7 @@ extern const struct vpu_ops iris_vpu3_ops;
>  
>  struct vpu_ops {
>  	void (*power_off_hw)(struct iris_core *core);
> +	int (*power_off_controller)(struct iris_core *core);
>  	u64 (*calc_freq)(struct iris_inst *inst, size_t data_size);
>  };
>  
> @@ -22,6 +23,7 @@ void iris_vpu_clear_interrupt(struct iris_core *core);
>  int iris_vpu_watchdog(struct iris_core *core, u32 intr_status);
>  int iris_vpu_prepare_pc(struct iris_core *core);
>  int iris_vpu_power_on(struct iris_core *core);
> +int iris_vpu_power_off_controller(struct iris_core *core);
>  void iris_vpu_power_off_hw(struct iris_core *core);
>  void iris_vpu_power_off(struct iris_core *core);

Reviewed-by: Vikash Garodia <quic_vgarodia@...cinc.com>